This draw used PHP's random_int() function — a CSPRNG that reads directly from your operating system's cryptographic entropy source (/dev/urandom on Linux, CryptGenRandom on Windows).

The algorithm:

1. All valid ticket IDs were fetched from the database in ascending order.
2. A Fisher-Yates shuffle was applied: for each position i from the last index down to 1, a random index j between 0 and i (inclusive) was chosen using random_int(0, i), and the elements at i and j were swapped.
3. The first N tickets in the shuffled array became the winners.

The seed shown above was generated before the shuffle using bin2hex(random_bytes(16)) and is stored as a tamper-evident record. Contact us if you'd like to request a full audit log export.

PHP random_int() documentation →